Home / 485,320.08-728,078.52-185,810.40

Finding the Fourth Proportional to 485,320.08, 728,078.52 and 185,810.40

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Solution

The fourth proportional to 485,320.08, 728,078.52 and 185,810.40 is: 278,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,320.08 : 728,078.52 = 185,810.40 : x
  2. Step 2: Convert to fraction form
    485,320.08/728,078.52 = 185,810.40/x
  3. Step 3: Cross multiply
    485,320.08x = 728,078.52 × 185,810.40
  4. Step 4: Simplify right side
    485,320.08x = 135,284,561,032.61
  5. Step 5: Solve for x
    x = 135,284,561,032.61/485,320.08
  6. Step 6: Final answer
    x = 278,753.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.